/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package servlets;

import baseDatos.ConsultasBD;
import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author oracle
 */
public class Login extends HttpServlet {

    private ConsultasBD baseDatos;
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        HttpSession sesion = request.getSession();
        String usuario = request.getParameter("username");
        String passwd = request.getParameter("passwd");

        baseDatos = new ConsultasBD();

        if (baseDatos.Login(usuario.toUpperCase(), passwd)){
            sesion.setAttribute("cif", usuario);
            if (usuario.equals("admin")){
                sesion.setAttribute("usuario", usuario);

                //Consultamos la fecha de la última copia de seguridad
                String ultCopia = baseDatos.consultarUltimaCopia();
                if (ultCopia != null){ //Si hay alguna fecha
                    DateFormat df = new SimpleDateFormat("dd/MM/yy");
                    try {
                        Date fechaUltCopia = df.parse(ultCopia);
                        Date fechaActual = new Date();
                        System.out.println("La fecha consultada: " + df.format(fechaUltCopia) + ". La fecha actual: " + df.format(fechaActual));
                        Long diferenciaDeFechas = (fechaActual.getTime() - fechaUltCopia.getTime())/ 86400000L;
                        System.out.println("Han pasado " + diferenciaDeFechas + " días.");
                        if (diferenciaDeFechas > 30)
                            response.sendRedirect("../hacerCopia.jsp");
                        else
                            response.sendRedirect("../home.jsp");
                    } catch (ParseException ex) {
                        Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }else{
                    response.sendRedirect("../hacerCopia.jsp");
                }
            }else{
                sesion.setAttribute("usuario", baseDatos.consultarAsocCIF(usuario.toUpperCase()));
                response.sendRedirect("../home.jsp");
            }
        } else
            response.sendRedirect("../index.jsp");
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
